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Finding the Fourth Proportional to 243,253.36, 364,857.77 and 172,479.61

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Solution

The fourth proportional to 243,253.36, 364,857.77 and 172,479.61 is: 258,703.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,253.36 : 364,857.77 = 172,479.61 : x
  2. Step 2: Convert to fraction form
    243,253.36/364,857.77 = 172,479.61/x
  3. Step 3: Cross multiply
    243,253.36x = 364,857.77 × 172,479.61
  4. Step 4: Simplify right side
    243,253.36x = 62,930,525,012.67
  5. Step 5: Solve for x
    x = 62,930,525,012.67/243,253.36
  6. Step 6: Final answer
    x = 258,703.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.